Heathkit HD-1250 - Schematic

Page
67
NOTES:
1.
2.
3.
4.
5.
ALL
RESISTORS ARE 1/4-WATT, 5*
TOLERANCE
UNLESS
OTHERWISE NOTED.
VALUES ARE
IN OHMS <k-
1000l.
CAPACITORS
LESS
THAN
1 ARE IN pF; GREATER THAN
1
ARE
IN
pF.
+
THIS SYMBOL INDICATES A
CHASSIS GROUND.
^
THIS
SYMBOL
INDICATES
A CIRCUIT BOARD
GROUND.
THIS SYMBOL INDICATES AN EXTERNAL
CONNECTION
TO
THE CIRCUIT
BOARD.
6
G>
THIS SYMBOL INDICATES A POSITIVE
DC
VOLTAGE.
TAKEN WITH
A
HIGH INPUT
IMPEDANCE
VOLTMETER
FROM THE POINT INDICATED TO GROUND, WITH
NO COIL IN THE OSCILLATOR CIRCUIT.
PARTS ARE GROUPED AS FOLLOWS
1-9
MOUNTED ON CHASSIS
1119 MOUNTED
ON OSCILLATOR CIRCUIT BOARD
21-29
MOUNTED ON
DETECTOR CIRCUIT
BOARD
RANGE PART
NO. COLOR
LI 1.6-3.
4MHz
40-1689
RED
L2
3.2-6.
6MHz
40-1690
ORANGE
L3
6.3-13MHZ
40-1691
YELLOW
L4 12.5-26MHZ
40-1692
L5
25-SlMHz
40-1693
BLUE
L6 48-lOOMHz
40-1694
VIOLET
L7 100-250MHZ
40-1695
BROWN
6
i
1
»*"
SCHEMATIC OF
THE
HEATHKIT'
SOLID—
STATE DIP
METER
MODEL
HD-1250